package com.yy.service.front.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.yy.entity.front.*;
import com.yy.mapper.front.OrdersMapper;
import com.yy.mapper.front.UserMapper;
import com.yy.service.front.*;
import com.yy.utils.BaseContext;
import com.yy.utils.MD5Utils;
import com.yy.utils.R;
import com.yy.utils.RegexUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * create by KongFuning on 2022/8/4
 */
@Service
@Slf4j
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {

    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrderDetailService orderDetailService;

    /*
     * 用户下单
     * */
    @Override
    @Transactional
    public R submit(Orders orders) {
        // 获取当前用户id
        String userId = BaseContext.getCurrentId();

        // 查询当前用户的购物车数据
        LambdaQueryWrapper<ShoppingCart> qw = new LambdaQueryWrapper<>();
        qw.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(qw);

        if(shoppingCarts == null || shoppingCarts.size() == 0){
            return R.error("购物车为空，不能下单！");
        }

        // 查询用户数据
        User user = userService.getById(userId);

        // 查询地址数据
        String addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);

        if(addressBook == null){
            return R.error("用户地址信息有误，不能下单！");
        }

        String orderId = UUID.randomUUID().toString(true);

        AtomicInteger amount = new AtomicInteger(0);
        List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) ->{
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());

        // 向订单表插入数据，一条数据

        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get())); // 总金额
        orders.setUserId(userId);
        orders.setUserName(user.getName());
        orders.setNumber(orderId);
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));

        save(orders);

        // 向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);

        // 清空购物车数据
        shoppingCartService.remove(qw);
        return R.success("用户下单成功！");
    }

    /*
     * 查看订单
     * */
    @Override
    public R orderPage(Integer page, Integer pageSize) {
        Page<Orders> orderPage = new Page<>(page,pageSize);
        LambdaQueryWrapper<Orders> qw = new LambdaQueryWrapper<>();
        qw.eq(Orders::getUserId,BaseContext.getCurrentId());
        page(orderPage,qw);
        return R.success(orderPage);
    }
}
